The actual dimensions of a rectangle are 5ft by 3ft. Eric measures the sides to be 4.99ft by 3.36ft. In calculating the area, what is the relative error, to the nearest thousandth.Answer:
Q. The actual dimensions of a rectangle are 5ft by 3ft. Eric measures the sides to be 4.99ft by 3.36ft. In calculating the area, what is the relative error, to the nearest thousandth.Answer:
Calculate actual area: Calculate the actual area of the rectangle using the actual dimensions.Actual area = length × width = 5ft ×3ft = 15ft2.
Calculate measured area: Calculate the measured area of the rectangle using the measured dimensions.Measured area = length×width=4.99ft×3.36ft.Measured area = 16.7624ft2.
Calculate absolute error: Calculate the absolute error by subtracting the actual area from the measured area.Absolute error = ∣Measured area−Actual area∣=∣16.7624ft2−15ft2∣.Absolute error = 1.7624ft2.
Calculate relative error: Calculate the relative error by dividing the absolute error by the actual area and then multiplying by 100 to get the percentage.Relative error = (Absolute error/Actual area)×100.Relative error = (1.7624ft2/15ft2)×100.Relative error = 0.11749333…×100.Relative error = 11.749333…%.
Round relative error: Round the relative error to the nearest thousandth.Relative error ≈11.749%.